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7.1 GENErAL
Commissioning should be carried out by a competent person in accordance with the current issue of BS6798 / The Building Regulations.
Make sure that the system has been thoroughly flushed out with cold water. Refill the system with water, making sure that all the air is
properly vented from the heating system and the boiler. The boiler vent valve is located on top of the boiler (near the flue connection).
A suitable hose should be connected to the boiler vent valve for purging the air from the boiler, Before operating the boiler check that
all external controls are calling for heat.
This boiler is designed for use in a sealed system. Therefore fill the sealed system until the pressure reading on the boiler display (see
section 3) registers the design pressure (or the recommended pressure of 1 bar). Clear any air locks and check for leaks. Check the
operation of the safety valve, preferably by allowing the water pressure to rise until the valve lifts. This should be within ± 0.14 bar of
the preset pressure of 3.0 bar. Where this is not possible a manual check should be carried out. The system pressure should then be
reduced to the initial design pressure.
Important Notes:
(a)
To prevent corrosion in the system and to prevent deterioration of the efficiency of the system and components, it is important
that the system commissioning, cleansing and dosing should comply with BS7593 requirements before it is handed over to the
customer (see also section 4. (b)).
(b)
Failure to flush and add inhibitor to the system will invalidate the appliance warranty.
ON : Low pressure safety trip - Press S1 to reset
OFF : Normal operation
ON : Overheat safety trip - Press S1 to reset
OFF : Normal operation
ON : HW demand active
(detected by flow switch)
OFF : No HW demand
(detected by flow switch)
FLASHING : Controller initialising
OFF
: Normal mode
ON : HW demand active
(detected by AT)
OFF : No HW demand
(detected by AT)
ON : Boiler pump running
OFF : Boiler pump off
ON : CH controls calling for heat
i.e. CH demand is active
OFF : No CH demand
Figure 7.1 - Boiler controls and Display
cOMMISSIONING
7.0
f
a
e
g
b
d
c
D1
D2
S2
S1
Set/Reset
CONSTANT 'P' : System pressure in bar
FLASHING 'P' : System pressure low
CONSTANT 'F' : Frost Protection active - Level 1
FLASHING 'F' : Frost Protection active - Level 2
NORMAL MODE : System pressure reading e.g. 1.5
FROST PROTECTION MODE : Boiler temperature e.g. 4
FLASHING/ON : Service required
OFF
: Normal operating mode
ON : Decimal point when displaying system pressure
FLASHING : Lockout error
clear by pressing 'Reset' button S1
ON
: Blocking error
OFF
: Normal operating mode
FLASHING : Controller in standby mode
ON
: Burner is on
OFF
: No power OR controller faulty
Page 7
D3
D4
S3
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